/**
 * Copyright 2011 Joao Miguel Pereira
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package eu.jpereira.trainings.designpatterns.structural.composite.model;

import java.util.ArrayList;
import java.util.List;


/**
 * @author Joao Pereira
 * 
 */
public abstract class CompositeShape extends Shape {

	List<Shape> shapes;

	public CompositeShape() {
		this.shapes = createShapesList();
	}

	/**
	 * Remove a shape from this shape childrens
	 * 
	 * @param shape
	 *            the shape to remove
	 * @return true if the shape was present and was removed, false if the shape
	 *         was not present
	 */
	public boolean removeShape(Shape shape) {
		for(int i = 0; i < shapes.size(); i++){
			if( shapes.get(i).getType() == shape.getType() ){
				shapes.remove(i);
				return true;
			}
				
			
		}
		return true;

	}

	/**
	 * Return the total shapes count in case this is a composite
	 * 
	 * @return the total count of shapes if the shape is composite. -1 otherwise
	 */
	public int getShapeCount() {
		return this.shapes.size();
	}

	/**
	 * Add a shape to this shape.
	 * 
	 * @param shape
	 *            The shape to add
	 * @throws ShapeDoesNotSupportChildren
	 *             if this shape is not a composite
	 */
	public void addShape(Shape shape) {
		this.shapes.add(shape);
	}

	public List<Shape> getShapes() {
		return shapes;
	}//?????

	/**
	 * @param circle
	 * @return
	 */
	public List<Shape> getShapesByType(ShapeType shape) {
		List<Shape> ShapesByType = new ArrayList<Shape>();

		for(int i = 0; i < shapes.size(); i++){
	
			if(shapes.get(i).getType() ==shape)
				ShapesByType.add(shapes.get(i));		
		}
		return ShapesByType;
	}

	/**
	 * Return all shapes that are leafs in the tree
	 * 
	 * @return
	 */
	public List<Shape> getLeafShapes() {
		List<Shape> LeafShapes = new ArrayList<Shape>();
		for(int i = 0; i < shapes.size(); i++){
			if(shapes.get(i).asComposite() == null){
				LeafShapes.add(shapes.get(i));
			}
		}
		return LeafShapes;
	}

	/**
	 * Factory method for the list of children of this shape
	 * 
	 * @return
	 */
	protected List<Shape> createShapesList() {
		List<Shape> shapes= new ArrayList<Shape>();
		return shapes;
	
	}
	@Override
	public void move(int xIncrement,int yIncrement){
		super.move(xIncrement, yIncrement);
		for(int i = 0; i < shapes.size(); i++){
			shapes.get(i).move(xIncrement, yIncrement);
		}
	}
}

